Effects of Compression on the Removal of Water Droplet from GDLs of PEM Fuel Cells
M. H. Shojaeefard
Iran University of Science and Technology, School of Mechanical Engineering, Hangam Ave., 16846-13144 Tehran, Iran
Search for more papers by this authorCorresponding Author
G. R. Molaeimanesh
Iran University of Science and Technology, Research Laboratory of Automotive Fluids and Structures Analysis, School of Automotive Engineering, Hangam Ave., 16846-13114 Tehran, Iran
Correspondence: G. R. Molaeimanesh ([email protected]), Research Laboratory of Automotive Fluids and Structures Analysis, School of Automotive Engineering, Iran University of Science and Technology, Hangam Ave., Tehran 16846-13114, IranSearch for more papers by this authorM. R. Moqaddari
Iran University of Science and Technology, Research Laboratory of Automotive Fluids and Structures Analysis, School of Automotive Engineering, Hangam Ave., 16846-13114 Tehran, Iran
Search for more papers by this authorM. H. Shojaeefard
Iran University of Science and Technology, School of Mechanical Engineering, Hangam Ave., 16846-13144 Tehran, Iran
Search for more papers by this authorCorresponding Author
G. R. Molaeimanesh
Iran University of Science and Technology, Research Laboratory of Automotive Fluids and Structures Analysis, School of Automotive Engineering, Hangam Ave., 16846-13114 Tehran, Iran
Correspondence: G. R. Molaeimanesh ([email protected]), Research Laboratory of Automotive Fluids and Structures Analysis, School of Automotive Engineering, Iran University of Science and Technology, Hangam Ave., Tehran 16846-13114, IranSearch for more papers by this authorM. R. Moqaddari
Iran University of Science and Technology, Research Laboratory of Automotive Fluids and Structures Analysis, School of Automotive Engineering, Hangam Ave., 16846-13114 Tehran, Iran
Search for more papers by this authorAbstract
Proton-exchange membrane fuel cells (PEMFCs) with a sound potential for employing in the propulsion systems of green vehicles are currently at a high stage of development. However, appropriate water management is crucial for further development of PEMFCs. In the current investigation, the role of gas diffusion layer (GDL) compression and wettability on the removal of a water droplet from different GDLs with dissimilar levels of compression (0%, 15%, 20%, and 25%) and wettability (contact angles of 80°, 105°, and 150°) is inspected by numerous 3D lattice Boltzmann simulations. The results of this study demonstrate that by increasing of compression level, the droplet ejection will be more probable. Besides, for hydrophobic GDLs (i.e., contact angles of 105° and 150°) adding compression will help the removal process, regardless of the compression amount. However, for the hydrophilic GDLs (contact angle of 80°) adding compression is not necessarily helpful.
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